When you choose a NPC to transform to an another NPC with whatever option of the 3 you choose (Jump, Freeze or Yoshi Transform)
For example like in the Gifs. The NPC-89 has selected to transform into the NPC-1
And then you put wings it doesn´t matter wich option (Left and Right/ Up and Down/ Jump/ Chase/ Hover Foward/ Lakitu Style) and then you jump, freeze or eat it with Yoshi. It converts to the NPC-1 but the wings are "still attached" to the NPC that transforms into.
Gifs:
- Spoiler



It also happens to the wings Control by NPC 308 and the wings that work with the SMW Lines, but I suggest and think that these two mantain the status of the wings.
Note this doesn´t happen if instead of Wings you choose the Propeller. Only happens if you select Wings or the Hide option.
